Last night I was reading some English books and one of them explained that we never use singular countable nouns without an article, then I was wondering if this is only in formal English as I have always seen sentences like:Originally Posted by Emanuelli
a) I like banana. (instead of "I like bananas" or "I like a banana") <<
It's correct to say "I like banana." if you are referring to "banana" as a flavor.
For example, "I like chocolate ice cream, but banana is good too."
If you are talking about "bananas", then it's always, "I like bananas."
I like a banana. - That sentence is wrong. You could, however, say, "I'd like a banana."
I like strawberry. - That's okay if I'm using "strawberry" to describe a flavor.
I like strawberries. - This is the only one that is correct if I'm talking about fruit.